login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)

A000013 as a simple table

n a(n)
0 1
1 1
2 2
3 2
4 4
5 4
6 8
7 10
8 20
9 30
10 56
11 94
12 180
13 316
14 596
15 1096
16 2068
17 3856
18 7316
19 13798
20 26272
21 49940
22 95420
23 182362
24 349716
25 671092
26 1290872
27 2485534
28 4794088
29 9256396
30 17896832
31 34636834
32 67110932
33 130150588
34 252648992
35 490853416

[1,1,2,2,4,4,8,10,20,30,56,94,180,316,596,1096,
 2068,3856,7316,13798,26272,49940,95420,182362,
 349716,671092,1290872,2485534,4794088,9256396,
 17896832,34636834,67110932,130150588,252648992,
 490853416]

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 9 18:53 EDT 2024. Contains 372354 sequences. (Running on oeis4.)